{"id":8546,"url":"https://patchwork.libcamera.org/api/1.1/patches/8546/?format=json","web_url":"https://patchwork.libcamera.org/patch/8546/","project":{"id":1,"url":"https://patchwork.libcamera.org/api/1.1/projects/1/?format=json","name":"libcamera","link_name":"libcamera","list_id":"libcamera_core","list_email":"libcamera-devel@lists.libcamera.org","web_url":"","scm_url":"","webscm_url":""},"msgid":"<20200701210948.999363-2-niklas.soderlund@ragnatech.se>","date":"2020-07-01T21:09:47","name":"[libcamera-devel,v2,1/2] libcamera: utils: Add map_keys() function","commit_ref":null,"pull_url":null,"state":"superseded","archived":false,"hash":"deb90a78f91f9b3f6c0903fdc05489e895dca0fc","submitter":{"id":5,"url":"https://patchwork.libcamera.org/api/1.1/people/5/?format=json","name":"Niklas Söderlund","email":"niklas.soderlund@ragnatech.se"},"delegate":null,"mbox":"https://patchwork.libcamera.org/patch/8546/mbox/","series":[{"id":1069,"url":"https://patchwork.libcamera.org/api/1.1/series/1069/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=1069","date":"2020-07-01T21:09:46","name":"libcamera: utils: Add map_keys() function","version":2,"mbox":"https://patchwork.libcamera.org/series/1069/mbox/"}],"comments":"https://patchwork.libcamera.org/api/patches/8546/comments/","check":"pending","checks":"https://patchwork.libcamera.org/api/patches/8546/checks/","tags":{},"headers":{"Return-Path":"","X-Original-To":"parsemail@patchwork.libcamera.org","Delivered-To":"parsemail@patchwork.libcamera.org","Received":["from lancelot.ideasonboard.com (lancelot.ideasonboard.com\n\t[92.243.16.209])\n\tby patchwork.libcamera.org (Postfix) with ESMTPS id 87224C2E69\n\tfor ;\n\tWed, 1 Jul 2020 21:10:06 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id BE61660C58;\n\tWed, 1 Jul 2020 23:10:05 +0200 (CEST)","from bin-mail-out-06.binero.net (bin-mail-out-06.binero.net\n\t[195.74.38.229])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 1B4D360C53\n\tfor ;\n\tWed, 1 Jul 2020 23:10:04 +0200 (CEST)","from bismarck.berto.se (p4fca2eca.dip0.t-ipconnect.de\n\t[79.202.46.202]) by bin-vsp-out-01.atm.binero.net (Halon) with ESMTPA\n\tid 3a49eb76-bbdf-11ea-933e-005056917a89;\n\tWed, 01 Jul 2020 23:10:02 +0200 (CEST)"],"X-Halon-ID":"3a49eb76-bbdf-11ea-933e-005056917a89","Authorized-sender":"niklas@soderlund.pp.se","From":"=?utf-8?q?Niklas_S=C3=B6derlund?= ","To":"libcamera-devel@lists.libcamera.org","Date":"Wed, 1 Jul 2020 23:09:47 +0200","Message-Id":"<20200701210948.999363-2-niklas.soderlund@ragnatech.se>","X-Mailer":"git-send-email 2.27.0","In-Reply-To":"<20200701210948.999363-1-niklas.soderlund@ragnatech.se>","References":"<20200701210948.999363-1-niklas.soderlund@ragnatech.se>","MIME-Version":"1.0","Subject":"[libcamera-devel] [PATCH v2 1/2] libcamera: utils: Add map_keys()\n\tfunction","X-BeenThere":"libcamera-devel@lists.libcamera.org","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","Content-Type":"text/plain; charset=\"utf-8\"","Content-Transfer-Encoding":"base64","Errors-To":"libcamera-devel-bounces@lists.libcamera.org","Sender":"\"libcamera-devel\" "},"content":"From: Laurent Pinchart \n\nAdd a map_keys() function to the utils namespace to extract keys from a\nmap.\n\nSigned-off-by: Laurent Pinchart \n[Niklas: change return type to std::vector instead of std::set]\nSigned-off-by: Niklas Söderlund \n---\n include/libcamera/internal/utils.h | 10 ++++++++++\n src/libcamera/utils.cpp | 7 +++++++\n test/utils.cpp | 22 ++++++++++++++++++++++\n 3 files changed, 39 insertions(+)","diff":"diff --git a/include/libcamera/internal/utils.h b/include/libcamera/internal/utils.h\nindex 0953423ee8d04466..8d026cc6c0fe777a 100644\n--- a/include/libcamera/internal/utils.h\n+++ b/include/libcamera/internal/utils.h\n@@ -15,6 +15,7 @@\n #include \n #include \n #include \n+#include \n \n #define ARRAY_SIZE(a)\t(sizeof(a) / sizeof(a[0]))\n \n@@ -36,6 +37,15 @@ const char *basename(const char *path);\n char *secure_getenv(const char *name);\n std::string dirname(const std::string &path);\n \n+template\n+std::vector map_keys(const T &map)\n+{\n+\tstd::vector keys;\n+\tstd::transform(map.begin(), map.end(), std::back_inserter(keys),\n+\t\t [](const auto &value) { return value.first; });\n+\treturn keys;\n+}\n+\n template\n unsigned int set_overlap(InputIt1 first1, InputIt1 last1,\n \t\t\t InputIt2 first2, InputIt2 last2)\ndiff --git a/src/libcamera/utils.cpp b/src/libcamera/utils.cpp\nindex d55338fe681a8516..0567328fe31ba6f9 100644\n--- a/src/libcamera/utils.cpp\n+++ b/src/libcamera/utils.cpp\n@@ -127,6 +127,13 @@ std::string dirname(const std::string &path)\n \treturn path.substr(0, pos + 1);\n }\n \n+/**\n+ * \\fn std::vector map_keys(const T &map)\n+ * \\brief Retrieve the keys of a std::map<>\n+ * \\param[in] map The map whose keys to retrieve\n+ * \\return A std::vector<> containing the keys of \\a map\n+ */\n+\n /**\n * \\fn libcamera::utils::set_overlap(InputIt1 first1, InputIt1 last1,\n *\t\t\t\t InputIt2 first2, InputIt2 last2)\ndiff --git a/test/utils.cpp b/test/utils.cpp\nindex 66b91f1203e1f4e8..f482e6a1d829edbd 100644\n--- a/test/utils.cpp\n+++ b/test/utils.cpp\n@@ -6,6 +6,7 @@\n */\n \n #include \n+#include \n #include \n #include \n #include \n@@ -144,6 +145,27 @@ protected:\n \t\tif (TestPass != testDirname())\n \t\t\treturn TestFail;\n \n+\n+\t\t/* utils::map_keys() test. */\n+\t\tconst std::map map{\n+\t\t\t{ \"zero\", 0 },\n+\t\t\t{ \"one\", 1 },\n+\t\t\t{ \"two\", 2 },\n+\t\t};\n+\t\tstd::vector expectedKeys{\n+\t\t\t\"zero\",\n+\t\t\t\"one\",\n+\t\t\t\"two\",\n+\t\t};\n+\n+\t\tstd::sort(expectedKeys.begin(), expectedKeys.end());\n+\n+\t\tconst std::vector keys = utils::map_keys(map);\n+\t\tif (keys != expectedKeys) {\n+\t\t\tcerr << \"utils::map_keys() test failed\" << endl;\n+\t\t\treturn TestFail;\n+\t\t}\n+\n \t\treturn TestPass;\n \t}\n };\n","prefixes":["libcamera-devel","v2","1/2"]}